// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2015 Cavium, Inc. */ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/etherdevice.h> #include <linux/of.h> #include <linux/if_vlan.h> #include "nic_reg.h" #include "nic.h" #include "q_struct.h" #include "thunder_bgx.h" #define DRV_NAME … #define DRV_VERSION … #define NIC_VF_PER_MBX_REG … struct hw_info { … }; struct nicpf { … }; /* Supported devices */ static const struct pci_device_id nic_id_table[] = …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_VERSION(…); MODULE_DEVICE_TABLE(pci, nic_id_table); /* The Cavium ThunderX network controller can *only* be found in SoCs * containing the ThunderX ARM64 CPU implementation. All accesses to the device * registers on this platform are implicitly strongly ordered with respect * to memory accesses. So writeq_relaxed() and readq_relaxed() are safe to use * with no memory barriers in this driver. The readq()/writeq() functions add * explicit ordering operation which in this case are redundant, and only * add overhead. */ /* Register read/write APIs */ static void nic_reg_write(struct nicpf *nic, u64 offset, u64 val) { … } static u64 nic_reg_read(struct nicpf *nic, u64 offset) { … } /* PF -> VF mailbox communication APIs */ static void nic_enable_mbx_intr(struct nicpf *nic) { … } static void nic_clear_mbx_intr(struct nicpf *nic, int vf, int mbx_reg) { … } static u64 nic_get_mbx_addr(int vf) { … } /* Send a mailbox message to VF * @vf: vf to which this message to be sent * @mbx: Message to be sent */ static void nic_send_msg_to_vf(struct nicpf *nic, int vf, union nic_mbx *mbx) { … } /* Responds to VF's READY message with VF's * ID, node, MAC address e.t.c * @vf: VF which sent READY message */ static void nic_mbx_send_ready(struct nicpf *nic, int vf) { … } /* ACKs VF's mailbox message * @vf: VF to which ACK to be sent */ static void nic_mbx_send_ack(struct nicpf *nic, int vf) { … } /* NACKs VF's mailbox message that PF is not able to * complete the action * @vf: VF to which ACK to be sent */ static void nic_mbx_send_nack(struct nicpf *nic, int vf) { … } /* Flush all in flight receive packets to memory and * bring down an active RQ */ static int nic_rcv_queue_sw_sync(struct nicpf *nic) { … } /* Get BGX Rx/Tx stats and respond to VF's request */ static void nic_get_bgx_stats(struct nicpf *nic, struct bgx_stats_msg *bgx) { … } /* Update hardware min/max frame size */ static int nic_update_hw_frs(struct nicpf *nic, int new_frs, int vf) { … } /* Set minimum transmit packet size */ static void nic_set_tx_pkt_pad(struct nicpf *nic, int size) { … } /* Function to check number of LMACs present and set VF::LMAC mapping. * Mapping will be used while initializing channels. */ static void nic_set_lmac_vf_mapping(struct nicpf *nic) { … } static void nic_get_hw_info(struct nicpf *nic) { … } #define BGX0_BLOCK … #define BGX1_BLOCK … static void nic_init_hw(struct nicpf *nic) { … } /* Channel parse index configuration */ static void nic_config_cpi(struct nicpf *nic, struct cpi_cfg_msg *cfg) { … } /* Responsds to VF with its RSS indirection table size */ static void nic_send_rss_size(struct nicpf *nic, int vf) { … } /* Receive side scaling configuration * configure: * - RSS index * - indir table i.e hash::RQ mapping * - no of hash bits to consider */ static void nic_config_rss(struct nicpf *nic, struct rss_cfg_msg *cfg) { … } /* 4 level transmit side scheduler configutation * for TNS bypass mode * * Sample configuration for SQ0 on 88xx * VNIC0-SQ0 -> TL4(0) -> TL3[0] -> TL2[0] -> TL1[0] -> BGX0 * VNIC1-SQ0 -> TL4(8) -> TL3[2] -> TL2[0] -> TL1[0] -> BGX0 * VNIC2-SQ0 -> TL4(16) -> TL3[4] -> TL2[1] -> TL1[0] -> BGX0 * VNIC3-SQ0 -> TL4(24) -> TL3[6] -> TL2[1] -> TL1[0] -> BGX0 * VNIC4-SQ0 -> TL4(512) -> TL3[128] -> TL2[32] -> TL1[1] -> BGX1 * VNIC5-SQ0 -> TL4(520) -> TL3[130] -> TL2[32] -> TL1[1] -> BGX1 * VNIC6-SQ0 -> TL4(528) -> TL3[132] -> TL2[33] -> TL1[1] -> BGX1 * VNIC7-SQ0 -> TL4(536) -> TL3[134] -> TL2[33] -> TL1[1] -> BGX1 */ static void nic_tx_channel_cfg(struct nicpf *nic, u8 vnic, struct sq_cfg_msg *sq) { … } /* Send primary nicvf pointer to secondary QS's VF */ static void nic_send_pnicvf(struct nicpf *nic, int sqs) { … } /* Send SQS's nicvf pointer to primary QS's VF */ static void nic_send_snicvf(struct nicpf *nic, struct nicvf_ptr *nicvf) { … } /* Find next available Qset that can be assigned as a * secondary Qset to a VF. */ static int nic_nxt_avail_sqs(struct nicpf *nic) { … } /* Allocate additional Qsets for requested VF */ static void nic_alloc_sqs(struct nicpf *nic, struct sqs_alloc *sqs) { … } static int nic_config_loopback(struct nicpf *nic, struct set_loopback *lbk) { … } /* Reset statistics counters */ static int nic_reset_stat_counters(struct nicpf *nic, int vf, struct reset_stat_cfg *cfg) { … } static void nic_enable_tunnel_parsing(struct nicpf *nic, int vf) { … } static void nic_enable_vf(struct nicpf *nic, int vf, bool enable) { … } static void nic_pause_frame(struct nicpf *nic, int vf, struct pfc *cfg) { … } /* Enable or disable HW timestamping by BGX for pkts received on a LMAC */ static void nic_config_timestamp(struct nicpf *nic, int vf, struct set_ptp *ptp) { … } /* Get BGX LMAC link status and update corresponding VF * if there is a change, valid only if internal L2 switch * is not present otherwise VF link is always treated as up */ static void nic_link_status_get(struct nicpf *nic, u8 vf) { … } /* Interrupt handler to handle mailbox messages from VFs */ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) { … } static irqreturn_t nic_mbx_intr_handler(int irq, void *nic_irq) { … } static void nic_free_all_interrupts(struct nicpf *nic) { … } static int nic_register_interrupts(struct nicpf *nic) { … } static void nic_unregister_interrupts(struct nicpf *nic) { … } static int nic_num_sqs_en(struct nicpf *nic, int vf_en) { … } static int nic_sriov_init(struct pci_dev *pdev, struct nicpf *nic) { … } static int nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { … } static void nic_remove(struct pci_dev *pdev) { … } static struct pci_driver nic_driver = …; static int __init nic_init_module(void) { … } static void __exit nic_cleanup_module(void) { … } module_init(…) …; module_exit(nic_cleanup_module);
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